Appreciated, I will check them out. That is worth the savings to drive up.
I'll add one more thing to Family Affairs reply: I would opt for a minimum of 18k Cap. I have a 2018 Marlin that comes in around 12,500 lbs. I am getting a trailer for it here in Fla this spring and am going with three 7000 lb axles with Electric Over Hydraulic brakes, giving me a 21000 Cap rating.
Assuming your Marlin weighs, say, 11K; add a 3000 lb trailer and that puts you at 14K. That's not a lot of cushion if you have a 15K trailer. Even if you don't transport it very far, if your spending the money on a new trailer, I think it's a good idea to equip it to handle the weight of the boat with a comfortable capacity margin. (Of course it's not me springing for it either...)
I have towed my previous boats on marginal trailers over the years. They were sold to me as a package deal and were on the edge of capacity, I guess to keep the total boat & trailer cost down. I continually paid for it with premature bearing wear, bent axles on one particular trailer and broken welds on another. Granted, I trailered 9000 miles a year, so my situation may not compare with yours. That said, over building a trailer is never a bad idea.
Good Luck, and enjoy your Marlin! What a great boat...